Stephanie Pratt has just won herself a thirty-day, no-expenses paid trip to rehab, thanks to her DUI arrest last month following Holly Montag's birthday party.

The Hills star, 23, pleaded not guilty to misdemeanor DUI Friday in a Los Angeles court and agreed to enroll in a 30-day residential rehab facility.

If convicted, Pratt faces up to six months in jail and a $1,000 fine. (Source)

If I were her I'd just take my chances with the jail time, everyone knows these stupid bitches never serve more than like five goddamn minutes or whatever. Then again, she is Spencer Pratt's sister. I'm pretty sure judges aren't supposed to factor in blood relations when sentencing but I'm also pretty sure judges aren't supposed to give each other high-fives in chambers after sentencing. She probably made the right call here.

Stephanie and some more "Hills"-whores at the "Assassin's Creed II" launch last week: